So for my electrical engineering classes, we were tasked to make an operational amplifier.
However, on the day of testing the instructor showed me that the bottom of my breadboard (which he had given me) was one big conductive plate, and that some of my wires were pushed far enough into the breadboard to make contact with it, creating a connection between any wires touching it, as well as a capacitive connection to the entire rest of my circuit.
He said that this broke the design specifications of the circuit, and I got a much worse grade than I first expected.
Can someone please explain to me why anyone would design a breadboard like that?